Global Patent Index - EP 1473442 A3

EP 1473442 A3 20041117 - Steam turbine, steam turbine plant and method of operating a steam turbine in a steam turbine plant

Title (en)

Steam turbine, steam turbine plant and method of operating a steam turbine in a steam turbine plant

Title (de)

Dampfturbine, Dampfkraftwerk und Methode zum Betreiben einer Dampfturbine in eines Dampfkraftwerkes

Title (fr)

Turbine à vapeur, centrale à vapeur et méthode pour opérer une turbine à vapeur dans une centrale à vapeur

Publication

EP 1473442 A3 20041117 (EN)

Application

EP 04010348 A 20040430

Priority

JP 2003125672 A 20030430

Abstract (en)

[origin: EP1473442A2] A steam turbine and steam turbine plant that can utilize a relatively higher reheated steam, such as about 700 degrees Centigrade or higher, is provided. A steam turbine plant includes a steam generator 9 generating high pressure steam and reheated steam, a high pressure turbine 3 driven by the high pressure steam generated by the steam generator 9, and an intermediate pressure turbine 2 driven by the reheated steam. A steam bleed line 5 coupled with the high pressure turbine 3 bleeds steam from the high pressure turbine 3 as cooling steam. The intermediate pressure turbine 3 includes a heated steam inlet 35, 45 for receiving the reheated steam, and a cooling steam inlet 100 for receiving the cooling steam. The cooling steam cools components of the intermediate pressure turbine 2 that receive the reheated steam. A low pressure turbine 7 is driven by steam discharged from the intermediate pressure turbine 2, and a condenser 15 condenses steam discharged from the low pressure turbine 7 into water as a condensate. A plurality of feedwater heaters 17 to 20, and 23 to 25 heat the condensate to produce feedwater provided to the steam generator 9.

IPC 1-7

F01K 13/00; F01D 25/12; F01D 25/08; F01D 25/26

IPC 8 full level

F01D 25/12 (2006.01); F01K 13/00 (2006.01)

CPC (source: EP US)

F01D 25/12 (2013.01 - EP US); F01K 13/006 (2013.01 - EP US); B22F 2998/10 (2013.01 - EP US); F05D 2260/2322 (2013.01 - EP US)

Citation (search report)

  • [X] EP 1050666 A2 20001108 - SIEMENS WESTINGHOUSE POWER [US]
  • [X] US 2552239 A 19510508 - WARREN GLENN B
  • [A] DE 3042782 A1 19820609 - WIESER DR RUDOLF
  • [XA] US 2815645 A 19571210 - DOWNS JACK E
  • [X] PATENT ABSTRACTS OF JAPAN vol. 1997, no. 11 28 November 1997 (1997-11-28)
  • [X] PATENT ABSTRACTS OF JAPAN vol. 0123, no. 15 (M - 735) 26 August 1988 (1988-08-26)
  • [X] PATENT ABSTRACTS OF JAPAN vol. 0080, no. 47 (M - 280) 2 March 1984 (1984-03-02)
  • [X] PATENT ABSTRACTS OF JAPAN vol. 0082, no. 62 (M - 341) 30 November 1984 (1984-11-30)
  • [XA] PATENT ABSTRACTS OF JAPAN vol. 0081, no. 64 (M - 313) 28 July 1984 (1984-07-28)
  • [XA] PATENT ABSTRACTS OF JAPAN vol. 1998, no. 01 30 January 1998 (1998-01-30)
  • [XA] PATENT ABSTRACTS OF JAPAN vol. 0081, no. 43 (M - 306) 4 July 1984 (1984-07-04)
  • [AX] PATENT ABSTRACTS OF JAPAN vol. 0072, no. 21 (M - 246) 30 September 1983 (1983-09-30)
  • [AX] PATENT ABSTRACTS OF JAPAN vol. 1998, no. 04 31 March 1998 (1998-03-31)
  • [AX] PATENT ABSTRACTS OF JAPAN vol. 1997, no. 04 30 April 1997 (1997-04-30)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1473442 A2 20041103; EP 1473442 A3 20041117; EP 1473442 B1 20140423; CN 100406685 C 20080730; CN 1550644 A 20041201; JP 2010121632 A 20100603; JP 4776729 B2 20110921; US 2004261417 A1 20041230; US 7003956 B2 20060228

DOCDB simple family (application)

EP 04010348 A 20040430; CN 200410059503 A 20040430; JP 2010023527 A 20100204; US 83559304 A 20040430